21 South William Street

Manhattan, NY 10004BBL 1-00029-7503Map

21 South William Street is a condominium built in 1928 in Manhattan, 10004. It has 31 residential units across 8 floors. The owner of record is Block Hall Condominium. HPD has recorded 8 housing violations here, most recently on November 15, 2023.

HPD violations: 8
DOB violations: 22
ECB violations: 22
HPD complaints: 23

What to know

Good

No open Class C

No open immediately-hazardous violations among recent records.

Good

Last violation Nov 15, 2023

Date of the most recent HPD inspection that found a problem.

Good

No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 8

IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 15, 2023
Closed — Violation dismissed
ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Mar 15, 2023
Closed — Violation dismissed
IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 2, 2022
Closed — Violation dismissed
ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Feb 16, 2022
Closed — Violation dismissed
ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 1, 2021
Closed — Violation dismissed
IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 25, 2019
Closed — Violation dismissed
IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 6, 2017
Closed — Violation dismissed
IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 1, 2015
Closed — Violation dismissed

DOB building violations · 22

Landmark none
Landmk-landmark none
Dec 13, 2024
Dob violation - active
Landmark none
Landmk-landmark none
Dec 13, 2024
Dob violation - active
Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
Aug 2, 2022
Dob violation - dismissed
Failure to post energy grade/score none
Failure to display energy efficiency score and energy efficiency grade as per adcode sec. 28-309.12.3
Dec 1, 2021
Dob violation - active
Elevator elevatorrequired
E-elevator elevatorrequired
Jan 29, 2020
Dob violation - resolved
Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
Nov 2, 2019
Dob violation - dismissed
Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
Aug 2, 2019
Dob violation - dismissed
Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
May 2, 2019
Dob violation - dismissed
Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - dismissed
Elevator elevatorrequired
E-elevator elevatorrequired
Jan 28, 2016
Dob violation - resolved

Show 12 more ↓

Elevator annual inspection / test elevatorrequired
Violation issued to elevator-failure to file category 1 2014 inspection/test
Jun 10, 2015
Dob violation - dismissed
Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2012 inspection report
May 15, 2014
Dob violation - dismissed
Elevator elevatorrequired
E-elevator elevatorrequired
Jan 28, 2014
Dob violation - resolved
Elevator elevatorrequired
E-elevator elevatorrequired
Jul 17, 2012
Dob violation - resolved
Landmark none
Landmk-landmark none
Jun 7, 2011
Dob violation - dismissed
Landmark none
Landmk-landmark none
Jun 7, 2011
Dob violation - dismissed
Landmark none
Landmk-landmark none
Jun 7, 2011
Dob violation - dismissed
Landmark none
Landmk-landmark none
Jun 7, 2011
Dob violation - dismissed
Low pressure boiler boiler required
Lblvio-low pressure boiler boiler required
Dec 31, 2009
Dob violation - dismissed
Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 1, 2009
Dob violation - dismissed
Elevator elevatorrequired
E-elevator elevatorrequired
Jul 28, 2008
Dob violation - resolved
Elevator elevatorrequired
E-elevator elevatorrequired
Feb 17, 2006
Dob violation - resolved

ECB violations · 22

Class - 2
B254,50. 50-motorized fresh air louver defective. not opening for operation of hwh.
May 12, 2015 · Penalty $2,500
Resolve
Class - 2
Altered bldg occupied w/o a valid certificate of occupancy as per sec.28-118.31 & 28-118.3.2. tco#103810547 exp. 08/02/09. remedy:obtain va lid c/o.
Sep 2, 2009 · Penalty $500
Resolve
Class - 2
Alt bldg occupied w/o a valid certificate of occupancy as per 28-118.3.1 and 28-118.3.2 remedy: obtain valid c of o or discontinue illegal occupancy.
Jul 9, 2008 · Penalty $500
Resolve
Non-hazardous
Altered bldg occupied w/o a valid c of o. note: temp c of o #10381054708 exp 1/24/08 for bldg occupied. remedy: obtain valid c of o.
Mar 5, 2008
Resolve
Non-hazardous
Failure to provide contractors sign on shed as required by dob. remedy: post contractors sign on shed
Mar 25, 2006
Resolve
Non-hazardous
Failure to post permit holders sign on sidewalk shed as required by ac code. remedy: post permit holders sign on shed
Mar 25, 2006
Resolve
Non-hazardous
Noted: installed signage w/o a permit in c5-5 district. remedy: removeillegal work.
Nov 10, 2005
Resolve
Non-hazardous
Noted: impermissible advertising signage in c5-5 district. remedy: remove illegal signage.
Nov 10, 2005
Resolve
Non-hazardous
Noted: signage in c5-5 district exceeds 200 sq. ft. surface area restrication. remedy: remove or legalize signage.
Nov 10, 2005
Resolve
Non-hazardous
Noted: signage exceeds 25 ft. permitted height for c5-5 district. remedy: remove or legalize signage.
Nov 10, 2005
Resolve

Show 12 more ↓

Non-hazardous
Noted: impermissible advertising sign in c5-5 district at bldg south end. remedy: remove illegal sign.
Aug 30, 2005
Resolve
Non-hazardous
Noted: signs in c5-5 district exceeds 200 sq. ft. surface area restriction. remedy: remove or legalize sign.
Aug 30, 2005
Resolve
Non-hazardous
Noted: sign exceeds permitted height for c5-5 district. remedy: removeor legalize sign.
Aug 30, 2005
Resolve
Non-hazardous
Noted: installed sign w/o a permit in c5-5 district. remedy: remove illegal work.
Aug 30, 2005
Resolve
Hazardous
Having prohibited signage in a c district. remedy: remove illegal signage.
Jun 9, 2004
Resolve
Hazardous
Having signage with a surface area more than 200 sq. ft. remedy: remove illegal signage.
Jun 9, 2004
Resolve
Hazardous
Having signage extending higher than 25 feet above curb level. remedy:remove illegal signage.
Jun 9, 2004
Resolve
Non-hazardous
Failure to file an amended fifth round report acceptable to this department indicating correction of unsafe conditions described in initial local law 11/98 report.remedy:file an amended report following remedia
Apr 6, 2004 · Penalty $700
Resolve
Non-hazardous
Failure to file an amended round five report acceptable to this department pursuant to rule r.c.n.y. 32-03b(5), indicating correction of hazardous conditions described in initial ll11/98 report. remedy: file an
Mar 21, 2003 · Penalty $1,000
Resolve
Hazardous
Failure to file an amended round five report acceptable to this department pursuant to rule r.c.n.y. 32-03b(5), inicating correction of hazardous conditions described in initial ll11/98 report. remedy:file an a
Jan 21, 2003 · Penalty $400
Resolve
Hazardous
Failure to file an ammended round five report acceptable to this department pursuant to rule r.c.n.y. 32-03b(5),indicating correction of hazardous conditions described in initial ll11/98report remedy file an am
May 3, 2002 · Penalty $400
Resolve
Unknown
Failure to have approve pa plans available for inspection. remedy: provide approve pa plans for inspection.
Jun 14, 1989 · Penalty $250
Resolve

Complaints

Appliance
Electric/gas range
Oct 5, 2026 · Apt 4A
Open
Heat/hot water
Entire building
Aug 6, 2026 · Apt BLDG
Close
General
Cooking gas
Aug 6, 2026 · Apt BLDG
Close
General
Cooking gas
Jul 26, 2026 · Apt BLDG
Close
General
Cooking gas
Jul 22, 2026 · Apt BLDG
Close
Plumbing
Water supply
Jul 22, 2026 · Apt BLDG
Close
General
Cooking gas
Jul 9, 2026 · Apt BLDG
Close
General
Cooking gas
Jul 8, 2026 · Apt BLDG
Close
Heat/hot water
Entire building
Jul 8, 2026 · Apt BLDG
Close
Heat/hot water
Entire building
Jul 7, 2026 · Apt BLDG
Close

Show 13 more ↓

Heat/hot water
Entire building
Jul 6, 2026 · Apt BLDG
Close
Heat/hot water
Apartment only
Feb 10, 2026 · Apt PH
Close
Heat/hot water
Entire building
Feb 10, 2026 · Apt BLDG
Close
Plumbing
Water supply
Jan 27, 2024 · Apt BLDG
Close
General
Cooking gas
Jan 16, 2019 · Apt 3B
Close
General
Cooking gas
Jan 16, 2019 · Apt 2D
Close
General
Cooking gas
Jan 16, 2019 · Apt 5D
Close
Heat/hot water
Entire building
Jan 8, 2019 · Apt 3A
Close
Unsanitary condition
Mold
Jul 28, 2014 · Apt 3C
Close
Unsanitary condition
Mold
Jul 28, 2014 · Apt 3C
Close
Unsanitary condition
Mold
Jul 28, 2014 · Apt 3C
Close
Unsanitary condition
Mold
Jul 28, 2014 · Apt 3C
Close
Heating
Heat related
Nov 11, 2012 · Apt NA
Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type: Condominium (RM)
Year built: 1928
Floors: 8
Residential units: 31
Building area: 23,980 ft²
Lot area: 4,377 ft²
Zoning: C5-5
Community board: 101
Council district: 1
Block / lot: 29 / 7503
Assessed value: $3,065,409
Landmark / historic district: Stone Street Historic District

HPD registration #142797, last renewed Oct 6, 2025.

Questions about 21 South William Street

Who owns 21 South William Street?

The owner of record in NYC Department of City Planning PLUTO data is Block Hall Condominium.

Does 21 South William Street have violations?

Yes. NYC HPD has recorded 8 housing violations at this property.

Is 21 South William Street rent stabilized?

No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.

When was 21 South William Street built?

City records list 1928 as the year it was built.

How many apartments are in 21 South William Street?

It has 31 residential units and 32 units in total.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.